Back wheel puncture

[karl101]

I recently had to take the back wheel off on my 905SEL for the first time to change the tyre. To add to the sound advice given previously, I found that the cable coming from the motor got twisted very easily, if this happens too often the wires in the cable will break.

Something to watch out for.

Karl.

 

[Wisper Bikes]

I have just finished reading this thread with a lot of interest.

Would another electrical connector near to the motor wheel be helpful?

Best regards

David

 

[Goryl]

Hello,

my completely non-technical opinion is that it would be great!
It would make the bike very reassuring as a new user: If you can see an obvious and safe way to completely unplug the motor then the perspective of the first puncture is far less daunting .

Goryl

 

[Wisper Bikes]

Thanks for your input Goryl

We already do this on the Alpinos, I will now implement this on all new Wispers.

Best regards

David

 

[the_killjoy]

Out of interest how many wires are there in the cable to the motor?

Can anyone recommend a good watertight connector?

 

[Wisper Bikes]

Hi Killjoy, it depends on whether the motor is has hall effect or not and then if there is a speedo on the bike.

I can only talk about Wisper bikes but depending on the model there can be 3, 4 or 8 wires.

On 26" rear wheel drive bikes we use a hall effect motor that has eight wires, three thicker wires that send current to the three phases and five that send signals to the halls.

The 805fe has three wires as there is no throttle.

Our Alpino front wheel drive bikes do not have hall effect motors they use four wires, three phases and one signal for the speedo. Dapu motors do not need the hall effect as much as Bafang motors in our experience and using as few wires as possible offers less chance of a break in connections.

If you need a watertight connector I am sure we can find one for you, they are not expensive.

All the best

David

 

[rotary]

I don't suppose a modification kit would be considered feasible at some future stage for DIY or Dealer fitting ?
First things first, I suppose eh ?
Anyway, your active involvement in such matters is much appreciated.
Regards from a delighted new 905se owner.
Rotary & The Black Shadow.

 

[Davanti]

I don't suppose a modification kit would be considered feasible at some future stage for DIY or Dealer fitting ?
First things first, I suppose eh ?
Anyway, your active involvement in such matters is much appreciated.
Regards from a delighted new 905se owner.
Rotary & The Black Shadow.

David

May I endorse the appreciation shown above by rotary? Your interest & involvement is reassuring and doing the Wisper brand proud.

Don

 

[Goryl]

David

May I endorse the appreciation shown above by rotary? Your interest & involvement is reassuring and doing the Wisper brand proud.

Don

I completely agree.

Goryl

 

[Wisper Bikes]

Thanks Guys, your kind words are much appreciated! It is a two way street though. Most of the upgrades and improvements that have been made to Wisper bikes over the last four or five years have originated from comments made by Pedelec Forum members. I seriously appreciate the input.

I can't see a problem with retro fitting a connector into the motor cable. If you are a deb hand with a soldering iron it would only take half an hour or so.

Best regards

David

 

[karl101]

I can't see a problem with retro fitting a connector into the motor cable. If you are a deb hand with a soldering iron it would only take half an hour or so.

David,
what connector are you using for the 905SEL? I can fit one myself, no worries there.

Karl.

 

[Wisper Bikes]

Deb hand? I meant of course dab hand!

The 905sel has a full hall affect motor so has 8 wires, I will ask for some extras to be sent with the next consignment of sel bikes and will put one by for you Karl.

All the best

David

 

[karl101]

That would be great, thanks
Karl

 

[the_killjoy]

David

Can you put me down for a connector for 905 as well please, I always think I am going to pull too hard on the cable when trying to get a bit of slack to lift out the wheel.

Thanks

 

[Wisper Bikes]

Will do Killjoy.

All the best

David

 

[Davanti]

David

Can you put me down for a connector for 905 as well please, I always think I am going to pull too hard on the cable when trying to get a bit of slack to lift out the wheel.

Thanks

Will do Killjoy.

All the best

David

David ... is retrofitting this 905 connector something that the Wisper Dealership would usually do for a non-soldering customer? ... obviously, there would be a charge, I understand that.

Don

 

[Wisper Bikes]

Hi Don, I do not imagine it would be an issue, however please wait until I have the parts in before asking them to do it, otherwise I will have a riot on my hands!

All the best

David

 

[Davanti]

Hi Don, I do not imagine it would be an issue, however please wait until I have the parts in before asking them to do it, otherwise I will have a riot on my hands!

All the best

David

No problem ... I DO riots!

 

[the_killjoy]

Thanks david

 

[Goryl]

Hello,

Does anyone know what is the size of the spanner needed to remove the wheels?
I had to borrow one when I did this and I cannot remember what was the size. I think it was 18mm but not 100% sure... (That is one way of recognizing a newbee )

I want to make sure that I have everything.

Thanks,

Goryl